Verification and Performance Optimisation of New RPC Detectors for ATLAS Phase 2

This report presents the verification and performance optimization of new Resistive Plate Chambers (RPCs) for the ATLAS experiment, conducted in preparation for the Phase II upgrade of the ATLAS Muon Spectrometer at the High Luminosity Large Hadron Collider (HL-LHC). The upgrade aims to handle higher particle rates and radiation levels, maintaining high precision in muon detection. A test setup consisting of four BOL (Barrel Outer Large) RPC detectors was constructed to evaluate detector performance, including efficiency curves, high voltage (HV) scans, and the analysis of hit distribution. Special attention was given to resolving issues with one of the chambers (BOL4), which showed suboptimal behavior. Efficiency calculations, noise analysis, and time-of-flight measurements were conducted, highlighting the system's overall readiness for the upcoming experiment, though further fine-tuning is required for optimal performance. The study concludes with recommendations for improving detector calibration and noise reduction.